Improvement in carpenter s vises



nitt 7 titte GEORGE F. BISSELL, 0F NEONTA, NEW YORK.

Letters Patent No. 110,001, dated December 13, 1870.

IMPROVEMENT IN CARPENTERS VISES.

'.llhe Schedule referred to in these Letters Patent and-making part olthe lame.

To (111 ulwm it may concern.

Be it known that. I, Gnomes lfqBrss-iam., ot Oneonta, county ol Otsego,State of X ew York, have` invented a new and useful Improvement'inCarpenter-s 'ises;` and I hereby declare that the following descriptionand accompauyingdrawing are suilieientto enable a u person skilled inthe art to make and use the invention.

` )Iy invention relates to the mannen-t'constructing Lilie diagonalbraces which connect and .support the -clleeks of a. carpenters vise;First in thea nlcatiou ot' a s irai s irme, which a l l connects` theends ot' the braces; and

Secondly, in the method ot' connecting the braces.

' v)figure l is aside view, represented open ide.

lfigure a section view, represented closed. Figure 3, views ot' theinside otthe cheeks oi'jaws. Figure 4, details of the braces, showing'the, hiugef lu' the drawing- A refers to the cheeks` oi' the vise.

l 15', the braces.A

C, the screw.

.D 1), the friction-rollers.

E, the coil spring.

d u, the pins holdin;l` the upper ends of the braces.

b, the. pin holding the middle ol the braces.

b b', .the recesses in the sides ot' the cheek pieces, hrwhich the endsot' the braces arc inserted and the coiled spring `is placed, actingfreely upon the ends of the braces.

c is the hole in one of the braces, made with notches on opposite sidesto receive the pin b, which has corresponding projectious to fitthe-notches in c.

The operation of this arrangement is as follows,

WZ: i

'lhe notches aud projections are at such au angle with the liucot'the.bracesthat, when they are actingv together, the projections ofthe pin lic across t-he hole c, away from the notches,l and prevent t-heseparation. To remove the parts, the braces must be brought lto such auangle that the notches aud'projections are coincident, and can pass oatfrom the hole c.

1u ordinary screws a. neck is formed near the head and a piu or otherequivalentis inserted through the cheek, thus unitingr them, and yetpermit the screw to be turned. In my invention the coiled spring, act`ing upouthc ends ot' the braces, causes the cheeks to separate wheneverthe screw is reversed.

What l claim as my invention, and desire to secure b v Letters atent, is

l. the coiled spring E, in combination with the ends ot` the braces BB', substantially as and for the purpose described.

2. lhe joint b c, constructed iu the two braces B and B', substantiallyas and for the purpose described- 8. The combination of the spring'E,braces B B', and friction rollers D D, with the jaws of' a, vise,substantially as and for the purpose described.

GEORGE F. BISSELL. Witnesses T. C. COXNOLLY, Tiros. S. MERCER.

